Yeah it's a real shame, because that article is very useful for identifying all the Mopar brake parts and is really helpful for doing a front brake conversion using the later 73+ parts. I mean, yes, the geometry does change if you use the FMJ spindles, but none of the doom and gloom he put in that article about using them is correct. And the FMJ spindles used to be a lot more prevalent in the wrecking yards, I hate to think how many folks passed up on an FMJ conversion because Ehrenberg speculated about the changes instead of doing his due diligence in actually checking the differences.